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Duplex Needle Valves are expertly crafted flow-control components tailored for high-pressure and high-corrosion industrial settings. Made from duplex stainless steel, these valves boast a unique dual-phase austenitic-ferritic microstructure that strikes a perfect balance between mechanical strength and corrosion resistance. They allow for precise control over fluid flow, making them perfect for critical applications where accuracy and reliability are a must. These valves excel in challenging environments, including those rich in chlorides, acids, and seawater. Commonly found in offshore, chemical, petrochemical, and desalination industries, they guarantee leak-free performance, durability, and safety even in the toughest conditions.
Duplex Needle Valves are made up of chromium, nickel, molybdenum, and nitrogen, which give them outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Their duplex structure provides high tensile and yield strength, excellent toughness, and strong fatigue resistance. These valves perform reliably in high-pressure and high-temperature situations, ensuring stability and long-lasting durability. Their chemical makeup allows for superior resistance to chloride-induced corrosion, while their mechanical properties ensure dependable operation in demanding industrial environments.
| VALVES SIZE | 6 MM TO 50 MM and 1/8″ TO 2″ |
| STANDARD | ASME B 16.10, BS1414/API 600, ASME B 16.5, BS EN 12266-1/API 598, ASME B 16.34, ASTM A890 4A, ASME B 16.25 |
| CONNECTION | TUBE END, THREADED, SOCKET WELD, BUTT WELD, FLANGED, WELD NIPPLE, SAE |
| THREAD | METRIC, BSPP, NPT, JIC, BSPT, UNF |
| FUNCTION | 2 , 5 , 4 , 3 WAY, |
| MATERIAL OF SEAL RING | PVDF, DELRIN, GRAPHITE, PTFE, PEEK, |
| PRESSURE RATING | 15000 , 3000, 1500 , 10000, 6000 , 20000 PSI |
| TEMPERATURE OF MEDIA | (-120* C – 500*C ) AS LIKE PRESSURE RANGE |
| STANDARD | DIN , ISO , API , ANSI , AWWA , ASME , MSS |
| MEDIA | AIR, CHEMICAL, GAS, WATER, STEAM, HOT WATER , HYDRAULIC OIL, COLD WATER, SEA WATER |
| TYPE OF BODY | BAR STOCK |
| EQUIVALENT BRANDS | OLIVER VALVES, PARKER, SWAGELOK, HAMLET, DK-LOK, HOKE |
| PACKING DETAILS | WOODEN PALLET, BOX PACKING |
| ELEMENT | DUPLEX 31803 | DUPLEX 2205 |
|---|---|---|
| NI | 4.50 – 6.50 | 4.50 – 6.50 |
| C | 0.030 max | 0.030 max |
| N | 0.14 – 0.20 | 0.08 – 0.20 |
| P | 0.030 max | 0.030 max |
| MN | 2.00 max | 2.00 max |
| CR | 22.0 – 23.0 | 21.0 – 23.0 |
| S | 0.020 max | 0.20 max |
| MO | 3.0 – 3.5 | 2.50 – 3.50 |
| SI | 1.00 max | 1.00 max |
| FE | 63.72 min | 63.54 min |
| Grade | % Elongation | YS (MPa) | Hardness(BHN) | UTS (MPa) |
| 31803 | 25 min. | 450 min. | 293 max. | 620 min. |
| 2205 | 25 min. | 450 min. | 293 max. | 655 min. |
At Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Needle Valve in Manama, Bahrain, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Bahrain, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Needle Valves are essential in situations where you need precise flow control and excellent resistance to corrosion. You’ll find them commonly used in offshore oil and gas platforms, subsea systems, chemical processing facilities, desalination plants, and high-pressure instrumentation setups. Their robust design allows them to handle corrosive fluids, making them perfect for tasks like brine management, seawater injection, chemical dosing, and acid processing. In the power generation and petrochemical sectors, these valves play a crucial role in steam control, sample lines, and process monitoring equipment. Thanks to their accuracy, durability, and leak-proof performance, they’re a go-to choice for critical operations in tough industrial settings.
